Pith Number

pith:EORP2FPO

pith:2014:EORP2FPO2ITUS2U3DKRLAXEW4C

not attested not anchored not stored refs pending

Cryogenic optical lattice clocks with a relative frequency difference of $1\times 10^{-18}$

Hidetoshi Katori, Ichiro Ushijima, Manoj Das, Masao Takamoto, Takuya Ohkubo

arxiv:1405.4071 v1 · 2014-05-16 · physics.atom-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EORP2FPO2ITUS2U3DKRLAXEW4C}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:51:43.195776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23a2fd15eed227496a9b1aa2b05c96e0ac82e52d309007ddec4c3311690c3ec7

Aliases

arxiv: 1405.4071 · arxiv_version: 1405.4071v1 · doi: 10.48550/arxiv.1405.4071 · pith_short_12: EORP2FPO2ITU · pith_short_16: EORP2FPO2ITUS2U3 · pith_short_8: EORP2FPO

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/EORP2FPO2ITUS2U3DKRLAXEW4C \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 23a2fd15eed227496a9b1aa2b05c96e0ac82e52d309007ddec4c3311690c3ec7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fd822a32307f3d8bba08ae669256027847fad4d9184e3385e94dccd695b2a11",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2014-05-16T06:44:17Z",
    "title_canon_sha256": "94b3e3808d22a7e777227bedd656c3a8d97128eaa6139706e38a4b04edd92fd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.4071",
    "kind": "arxiv",
    "version": 1
  }
}